This series rebases the virtio-iommu device on qemu 4.1.0-rc2 and implements the v0.12 virtio-iommu spec. The driver has just been upstreamed in 5.3 so kernel dependencies are now resolved.
The pci proxy for the virtio-iommu device is now available and needs to be instantiated from the command line using "-device virtio-iommu-pci". At the moment the virtio-iommu-device only works in the ARM virt machine with DT boot. Indeed, besides the device instantiation, links between the PCIe root complex and the IOMMU must be described. ACPI description is not yet supported at kernel level. Best Regards Eric This series can be found at: https://github.com/eauger/qemu/tree/v4.1.0-rc2-virtio-iommu-v10 virtio-iommu kernel driver is available from 5.3-rc3 onwards Testing: - tested with guest using virtio-net-pci (,vhost=off,iommu_platform,disable-modern=off,disable-legacy=on) and virtio-blk-pci - VFIO/VHOST integration is not part of this series. Please follow [PATCH RFC v5 0/5] virtio-iommu: VFIO integration respins History: v9 -> v10: - rebase on 4.1.0-rc2, compliance with 0.12 spec - removed ACPI part - cleanup (see individual change logs) - moved to a PATCH series v8 -> v9: - virtio-iommu-pci device needs to be instantiated from the command line (RID is not imposed anymore). - tail structure properly initialized v7 -> v8: - virtio-iommu-pci added - virt instantiation modified - DT and ACPI modified to exclude the iommu RID from the mapping - VIRTIO_IOMMU_F_BYPASS, VIRTIO_F_VERSION_1 features exposed v6 -> v7: - rebase on qemu 3.0.0-rc3 - minor update against v0.7 - fix issue with EP not on pci.0 and ACPI probing - change the instantiation method v5 -> v6: - minor update against v0.6 spec - fix g_hash_table_lookup in virtio_iommu_find_add_as - replace some error_reports by qemu_log_mask(LOG_GUEST_ERROR, ...) v4 -> v5: - event queue and fault reporting - we now return the IOAPIC MSI region if the virtio-iommu is instantiated in a PC machine. - we bypass transactions on MSI HW region and fault on reserved ones. - We support ACPI boot with mach-virt (based on IORT proposal) - We moved to the new driver naming conventions - simplified mach-virt instantiation - worked around the disappearing of pci_find_primary_bus - in virtio_iommu_translate, check the dev->as is not NULL - initialize as->device_list in virtio_iommu_get_as - initialize bufstate.error to false in virtio_iommu_probe v3 -> v4: - probe request support although no reserved region is returned at the moment - unmap semantics less strict, as specified in v0.4 - device registration, attach/detach revisited - split into smaller patches to ease review - propose a way to inform the IOMMU mr about the page_size_mask of underlying HW IOMMU, if any - remove warning associated with the translation of the MSI doorbell v2 -> v3: - rebase on top of 2.10-rc0 and especially [PATCH qemu v9 0/2] memory/iommu: QOM'fy IOMMU MemoryRegion - add mutex init - fix as->mappings deletion using g_tree_ref/unref - when a dev is attached whereas it is already attached to another address space, first detach it - fix some error values - page_sizes = TARGET_PAGE_MASK; - I haven't changed the unmap() semantics yet, waiting for the next virtio-iommu spec revision. v1 -> v2: - fix redifinition of viommu_as typedef Eric Auger (15): update-linux-headers: Import virtio_iommu.h linux-headers: update against 5.3-rc2 virtio-iommu: Add skeleton virtio-iommu: Decode the command payload virtio-iommu: Add the iommu regions virtio-iommu: Endpoint and domains structs and helpers virtio-iommu: Implement attach/detach command virtio-iommu: Implement map/unmap virtio-iommu: Implement translate virtio-iommu: Implement probe request virtio-iommu: Expose the IOAPIC MSI reserved region when relevant virtio-iommu: Implement fault reporting virtio_iommu: Handle reserved regions in translation process virtio-iommu-pci: Add virtio iommu pci support hw/arm/virt: Add the virtio-iommu device tree mappings hw/arm/virt.c | 54 +- hw/virtio/Kconfig | 5 + hw/virtio/Makefile.objs | 2 + hw/virtio/trace-events | 25 + hw/virtio/virtio-iommu-pci.c | 88 ++ hw/virtio/virtio-iommu.c | 1004 +++++++++++++++++ include/hw/arm/virt.h | 2 + include/hw/pci/pci.h | 1 + include/hw/virtio/virtio-iommu.h | 66 ++ include/standard-headers/asm-x86/bootparam.h | 2 + include/standard-headers/asm-x86/kvm_para.h | 3 + include/standard-headers/linux/ethtool.h | 2 + include/standard-headers/linux/pci_regs.h | 4 + include/standard-headers/linux/virtio_ids.h | 1 + include/standard-headers/linux/virtio_iommu.h | 165 +++ include/standard-headers/linux/virtio_pmem.h | 6 +- linux-headers/asm-arm/kvm.h | 12 + linux-headers/asm-arm/unistd-common.h | 2 + linux-headers/asm-arm64/kvm.h | 17 + linux-headers/asm-generic/mman-common.h | 15 +- linux-headers/asm-generic/mman.h | 10 +- linux-headers/asm-generic/unistd.h | 8 +- linux-headers/asm-mips/unistd_n32.h | 1 + linux-headers/asm-mips/unistd_n64.h | 1 + linux-headers/asm-mips/unistd_o32.h | 1 + linux-headers/asm-powerpc/mman.h | 6 +- linux-headers/asm-powerpc/unistd_32.h | 1 + linux-headers/asm-powerpc/unistd_64.h | 1 + linux-headers/asm-s390/unistd_32.h | 2 + linux-headers/asm-s390/unistd_64.h | 2 + linux-headers/asm-x86/kvm.h | 28 +- linux-headers/asm-x86/unistd_32.h | 2 + linux-headers/asm-x86/unistd_64.h | 2 + linux-headers/asm-x86/unistd_x32.h | 2 + linux-headers/linux/kvm.h | 11 +- linux-headers/linux/psp-sev.h | 5 +- linux-headers/linux/virtio_iommu.h | 1 + qdev-monitor.c | 1 + scripts/update-linux-headers.sh | 3 + 39 files changed, 1522 insertions(+), 42 deletions(-) create mode 100644 hw/virtio/virtio-iommu-pci.c create mode 100644 hw/virtio/virtio-iommu.c create mode 100644 include/hw/virtio/virtio-iommu.h create mode 100644 include/standard-headers/linux/virtio_iommu.h create mode 100644 linux-headers/linux/virtio_iommu.h -- 2.20.1
